|Time zone||IST (UTC+5:30)|
As per the 2001 census, Karappankadu had a total population of 589 with 264 males and 325 females. The sex ratio was 1231. The literacy rate was 73.85.
- "Primary Census Abstract - Census 2001". Directorate of Census Operations-Tamil Nadu. Archived from the original on 2009-08-29.
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